Topic on Extension talk:MsUpload

Apologies, Special:Upload or some other part of the site gave me the hint to create a request for the "uploader" right at Project:Requests, and I have done that.

I understand how to upload images to a MediaWiki instance—under normal circumstances.

However, I don't have permission to use Special:Upload on this wiki, and Commons specifically says that "fair use" images (including the example of screenshots) will be "deleted on sight."

I just (I hope) improved the section about using Extension:PdfHandler to be able to insert PDF thumbnails directly into an article with MsUpload, and I have a screenshot to demonstrate the end result (Imgur link).

Could someone advise me on the appropriate process for this?